Form 4: Magnetar Funds Divest CoreWeave Shares, Establish Collars

Magnetar Financial and related entities, a 10% owner and director of CoreWeave, Inc., reported significant sales of Class A Common Stock and established collar arrangements on derivative securities.

Summary

• Magnetar Financial LLC and its related entities, including Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, reported transactions in CoreWeave, Inc. Class A Common Stock and derivative securities.
• The reporting persons are identified as a Director and 10% Owner of CoreWeave, Inc.
• On August 28, 2025, a total of 915,339 shares of Class A Common Stock were sold across multiple transactions at weighted average prices ranging from $102.97 to $103.18.
• Following these sales, the Magnetar Funds indirectly beneficially own a total of 93,497,112 shares of Class A Common Stock.
• Additionally, on August 28, 2025, the entities entered into collar arrangements involving 508,219 underlying shares of Class A Common Stock. These arrangements include writing covered call options with a strike price of $175 and purchasing put options with a strike price of $70, both expiring on March 20, 2026.
• The collar arrangement implies that only one option can be in-the-money at expiration, with the other expiring. If neither is in-the-money, both options will expire.

Sentiment

Score: 4

Explanation: The significant insider selling by a 10% owner and director, despite the establishment of collar arrangements, generally indicates a cautious or negative sentiment from a key stakeholder. While collars can manage risk, the outright sale of a large block of shares often outweighs the hedging aspect in terms of market perception.

Positives

• The establishment of collar arrangements can be a strategy to manage risk and potentially lock in gains or limit losses on a portion of the holdings, indicating a sophisticated approach to portfolio management.

Negatives

• Significant sales of Class A Common Stock by a 10% owner and director could be perceived negatively by the market, potentially signaling a reduction in conviction or a need for liquidity.

Stakeholder Impact

• Shareholders: May interpret the significant insider selling as a negative signal, potentially leading to downward pressure on the stock price.

Next Steps

• Monitoring the expiration of the collar arrangements on March 20, 2026, to observe the settlement of the derivative securities.

Key Dates

Recommendation

The significant sale of Class A Common Stock by a 10% owner and director, Magnetar Financial LLC and its affiliates, typically signals a cautious outlook. However, the simultaneous establishment of collar arrangements on a portion of their remaining holdings suggests a strategic approach to risk management rather than a complete loss of confidence. Investors should monitor future filings and company performance, but the current action warrants a 'hold' due to the mixed signals of divestment and hedging.

Keywords

CoreWeave, CRWV, Magnetar Financial, Insider Selling, Form 4, Class A Common Stock, Derivative Securities, Collar Option, Put Option, Call Option, 10% Owner, Director Transaction